:root{--accent:#ff8812;--accent-deep:#ff5e1a;--bg:#f2f2f7;--surface:#fff;--text:#1c1c1e;--sub:#6b6b70;--line:#e3e3e8}
:root:not([data-theme="light"]){color-scheme:light dark}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0e0e11;--surface:#1c1c20;--text:#f2f2f7;--sub:#a0a0a8;--line:#2c2c32}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:ui-rounded,"Hiragino Maru Gothic ProN","Hiragino Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.8;-webkit-text-size-adjust:100%}
a{color:var(--accent-deep);text-decoration:none}a:hover{text-decoration:underline}
header.bar{display:flex;align-items:center;gap:12px;max-width:820px;margin:0 auto;padding:16px}
header.bar img{width:36px;height:36px;border-radius:9px}
header.bar .name{font-weight:800;font-size:17px;color:var(--text)}
header.bar nav{margin-left:auto;display:flex;gap:16px;font-size:14px;font-weight:700}
main{max-width:820px;margin:0 auto;padding:0 16px 48px}
h1{font-size:30px;line-height:1.3;margin:20px 0 8px;font-weight:800}
p.lead{color:var(--sub);margin:0 0 20px}
section.card{background:var(--surface);border-radius:20px;padding:20px 22px;margin:14px 0;box-shadow:0 4px 12px rgba(0,0,0,.04)}
section.card h2{font-size:19px;margin:0 0 10px;font-weight:800}
section.card p{margin:8px 0}
ul,ol{margin:8px 0;padding-left:1.4em}li{margin:6px 0}
ol.steps{list-style:none;padding-left:0;counter-reset:s}
ol.steps li{counter-increment:s;position:relative;padding-left:34px}
ol.steps li::before{content:counter(s);position:absolute;left:0;top:.35em;width:22px;height:22px;border-radius:11px;background:var(--accent);color:#fff;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;line-height:1}
dl.qa dt{font-weight:800;margin-top:12px}dl.qa dd{margin:2px 0 0;color:var(--sub)}
.hero{background:linear-gradient(135deg,var(--accent),var(--accent-deep) 60%,#d93359);color:#fff;border-radius:28px;padding:36px 26px;margin:8px 0 18px}
.hero img{width:84px;height:84px;border-radius:20px;box-shadow:0 8px 20px rgba(0,0,0,.25)}
.hero h1{margin:16px 0 6px;font-size:34px}.hero p{margin:0 0 18px;opacity:.95}
.btn{display:inline-block;background:#fff;color:#c2410c;font-weight:800;padding:12px 22px;border-radius:999px}
.btn:hover{text-decoration:none;opacity:.9}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.grid section.card{margin:0}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 6px;padding:0;list-style:none}
.toc a{display:block;background:var(--surface);border-radius:999px;padding:6px 14px;font-size:14px;font-weight:700;color:var(--text)}
footer{max-width:820px;margin:0 auto;padding:20px 16px 40px;color:var(--sub);font-size:13px;border-top:1px solid var(--line)}
footer a{color:var(--sub);margin-right:14px}